<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    #app {
      width: 100px;
      height: 90px;
      border: 1px solid black;
      background-repeat: no-repeat;
      background-image: url(./0.jpg);
      /* background-size: cover; */
      background-size: contain;
    }
  </style>
</head>
<body>
  <div id="app"></div>
</body>
</html>